10G Dataguard

Question

Hi
I am planning to implement Dataguard for learning purposes. I have a single box. Has anyone implemented Primary and standby database on same box. Please share any link or guidelines how to proceed.
I am thinking of manually copying the datafiles of my primary DB to new directory and create database with same name.
any suggestions??

Answer 1

Hi i did this although it's for windows and i am doing it on OEL4 i modified accordingly
Setup Standby Database on One PC
Building the Data Guard
1.     Check the primary database name:
SQL> select name from v$database;
NAME
BSL01LAB
2.     Enable Forced logging
--check FORCE LOGGING status
SQL> select force_logging from v$database;
FOR
NO
--eable FORCE LOGGING
SQL> alter database force logging;
Database altered.
--Verify
SQL> select force_logging from v$database;
FOR
YES
3.     Create a password file
--To create the password file
D:\oracle\product\10.2.0\db_1\database>orapwd file=PWDbsl01lab.ora password=dow entries=5
--To verify the new password file
D:\oracle\product\10.2.0\db_1\database>sqlplus /nolog
SQL*Plus: Release 10.2.0.1.0 - Production on Tue Jul 25 22:24:41 2006
Copyright (c) 1982, 2005, Oracle.  All rights reserved.
SQL> connect sys/dow as sysdba
Connected to an idle instance.
4.     Configure a Standby Redo Log
Step 1 Ensure log file sizes are identical on the primary and standby database
SQL> select group#,thread#,bytes/1024/1024,members from v$log;
    GROUP#    THREAD# BYTES/1024/1024    MEMBERS
         1          1              50          1
         2          1              50          1
         3          1              50          1
Step 2 Determine the appropriate number of standby redo log file groups
The minimal number should be 3+1=4
Step 3 Verify related database parameters and settings
Maxlogfiles
Maxlogmembers
Step 4 Create standby redo log file groups
SQL> alter database add standby logfile ('D:\ORACLE\PRODUCT\10.2.0\ORADATA\BSL01LAB\redo01d.log') size 50M;
Database altered.
SQL> alter database add standby logfile ('D:\ORACLE\PRODUCT\10.2.0\ORADATA\BSL01LAB\redo02d.log') size 50M;
Database altered.
SQL> alter database add standby logfile ('D:\ORACLE\PRODUCT\10.2.0\ORADATA\BSL01LAB\redo03d.log') size 50M;
Database altered.
Step 5 Verify the standby redo log file groups were created
SQL> select group#,thread#,sequence#,archived,status from v$standby_log;
    GROUP#    THREAD#  SEQUENCE# ARC STATUS
         4          0          0 YES UNASSIGNED
         5          0          0 YES UNASSIGNED
         6          0          0 YES UNASSIGNED
5.      Set Primary Database Initialization Parameters
--Content of pfilebsl01lab.ora
bsl01lab.__db_cache_size=79691776
bsl01lab.__java_pool_size=4194304
bsl01lab.__large_pool_size=4194304
bsl01lab.__shared_pool_size=75497472
bsl01lab.__streams_pool_size=0
*.audit_file_dest='D:\oracle\product\10.2.0/admin/bsl01lab/adump'
*.background_dump_dest='D:\oracle\product\10.2.0/admin/bsl01lab/bdump'
*.compatible='10.2.0.1.0'
*.control_files='D:\oracle\product\10.2.0/oradata/bsl01lab/\control01.ctl','D:\oracle\product\10.2.0/oradata/bsl01lab/\control02.ctl','D:\oracle\product\10.2.0/oradata/bsl01lab/\control03.ctl'
*.core_dump_dest='D:\oracle\product\10.2.0/admin/bsl01lab/cdump'
*.db_block_size=8192
*.db_domain=''
*.db_file_multiblock_read_count=16
*.db_recovery_file_dest='D:\oracle\product\10.2.0/flash_recovery_area'
*.db_recovery_file_dest_size=2147483648
*.dispatchers='(PROTOCOL=TCP) (SERVICE=bsl01labXDB)'
*.job_queue_processes=10
*.nls_length_semantics='CHAR'
*.open_cursors=300
*.pga_aggregate_target=16777216
*.processes=150
*.remote_login_passwordfile='EXCLUSIVE'
*.sga_target=167772160
*.undo_management='AUTO'
*.undo_tablespace='UNDOTBS1'
*.user_dump_dest='D:\oracle\product\10.2.0/admin/bsl01lab/udump'
db_name='bsl01lab'
db_unique_name=bsl01lab
log_archive_config='DG_CONFIG=(bsl01lab,bsl01labdg)'
control_files='D:\ORACLE\PRODUCT\10.2.0\ORADATA\BSL01LAB\CONTROL01.CTL','D:\ORACLE\PRODUCT\10.2.0\ORADATA\BSL01LAB\CONTROL02.CTL','D:\ORACLE\PRODUCT\10.2.0\ORADATA\BSL01LAB\CONTROL03.CTL'
log_archive_dest_1=
  'LOCATION=D:\oracle\product\10.2.0\arch
   VALID_FOR=(all_logfiles,all_roles)
   DB_UNIQUE_NAME=bsl01lab'
log_archive_dest_2=
  'SERVICE=bsl01labdg LGWR ASYNC
   VALID_FOR=(online_logfiles,primary_role)
   DB_UNIQUE_NAME=bsl01labdg'
LOG_ARCHIVE_DEST_STATE_1=enable
LOG_ARCHIVE_DEST_STATE_2=enable
REMOTE_LOGIN_PASSWORDFILE=EXCLUSIVE
LOG_ARCHIVE_FORMAT=%t_%s_%r.arc
LOG_ARCHIVE_MAX_PROCESSES=30
FAL_SERVER=bsl01labdg
FAL_CLIENT=bsl01lab
DB_FILE_NAME_CONVERT='C:\data_guard\bsl01lab','D:\oracle\product\10.2.0\oradata\bsl01lab'
LOG_FILE_NAME_CONVERT=
'C:\data_guard\bsl01lab','D:\oracle\product\10.2.0\oradata\bsl01lab'
STANDBY_FILE_MANAGEMENT=auto
STANDBY_ARCHIVE_DEST='C:\temp\priarch'
--create spfile
SQL> create spfile from pfile='d:\pfilebsl01lab.ora';
File created.
6.     Enable the primary DB Archiving
SQL> startup mount;
ORACLE instance started.
Total System Global Area  167772160 bytes
Fixed Size                  1247900 bytes
Variable Size              83887460 bytes
Database Buffers           79691776 bytes
Redo Buffers                2945024 bytes
Database mounted.
SQL> alter database archivelog;
Database altered.
SQL> alter database open;
Database altered.
7.     Create a Backup Copy of the Standby Database
--Shutdown DB
SQL> shutdown immediate
Database closed.
Database dismounted.
ORACLE instance shut down.
--Copy data files from “D:\oracle\product\10.2.0\oradata\bsl01lab”  to “C:\data guard\bsl01lab”
8.     Create a Control File for the Standby Database
SQL> startup mount
ORACLE instance started.
Total System Global Area  167772160 bytes
Fixed Size                  1247900 bytes
Variable Size              83887460 bytes
Database Buffers           79691776 bytes
Redo Buffers                2945024 bytes
Database mounted.
SQL> alter database create standby controlfile as 'd:\bsl01labdg.ctl';
Database altered.
SQL> alter database open;
Database altered.
9.     Create the parameter file for Standby Database
Contents of the parameter file:
bsl01lab.__db_cache_size=79691776
bsl01lab.__java_pool_size=4194304
bsl01lab.__large_pool_size=4194304
bsl01lab.__shared_pool_size=75497472
bsl01lab.__streams_pool_size=0
*.audit_file_dest='C:\data_guard\dump'
*.background_dump_dest='C:\data_guard\dump'
*.compatible='10.2.0.1.0'
*.core_dump_dest='C:\data_guard\dump'
*.db_block_size=8192
*.db_domain=''
*.db_file_multiblock_read_count=16
*.db_recovery_file_dest='C:\data_guard\dump'
*.db_recovery_file_dest_size=2147483648
*.dispatchers='(PROTOCOL=TCP) (SERVICE=bsl01labXDB)'
*.job_queue_processes=10
*.nls_length_semantics='CHAR'
*.open_cursors=300
*.pga_aggregate_target=16777216
*.processes=150
*.remote_login_passwordfile='EXCLUSIVE'
*.sga_target=167772160
*.undo_management='AUTO'
*.undo_tablespace='UNDOTBS1'
*.user_dump_dest='C:\data_guard\dump'
db_name='bsl01lab'
db_unique_name=bsl01labdg
log_archive_config='DG_CONFIG=(bsl01lab,bsl01labdg)'
control_files='C:\data_guard\bsl01lab\control01.ctl','C:\data_guard\bsl01lab\control02.ctl','C:\data_guard\bsl01lab\control03.ctl'
log_archive_dest_1=
  'LOCATION=C:\data_guard\arch
   VALID_FOR=(all_logfiles,all_roles)
   DB_UNIQUE_NAME=bsl01labdg'
log_archive_dest_2=
  'SERVICE=bsl01lab LGWR ASYNC
   VALID_FOR=(online_logfiles,primary_role)
   DB_UNIQUE_NAME=bsl01lab'
LOG_ARCHIVE_DEST_STATE_1=enable
LOG_ARCHIVE_DEST_STATE_2=enable
REMOTE_LOGIN_PASSWORDFILE=EXCLUSIVE
LOG_ARCHIVE_FORMAT=%t_%s_%r.arc
LOG_ARCHIVE_MAX_PROCESSES=30
FAL_SERVER=bsl01lab
FAL_CLIENT=bsl01labdg
DB_FILE_NAME_CONVERT='D:\oracle\product\10.2.0\oradata\bsl01lab','C:\data_guard\bsl01lab'
LOG_FILE_NAME_CONVERT=
'D:\oracle\product\10.2.0\oradata\bsl01lab','C:\data_guard\bsl01lab'
STANDBY_FILE_MANAGEMENT=auto
STANDBY_ARCHIVE_DEST='C:\temp\stdarch'
10.     Setup the Environment to Support the Standby Database
Step 1 Create a windows-based service
D:\oracle\product\10.2.0\db_1>oradim -new -sid bsl01labdg -intpwd dow -startmode manual
Instance created.
Step 2 create a password file
D:\oracle\product\10.2.0\db_1>set oracle_sid=bsl01labdg
C:\data guard\database>orapwd file=PWDbsl01labdg.ora password=dow entries=5
Step 3 configure listeners for the primary and standby database
Step 4 create Oracle Net Service names
Step 5 create a server parameter file for the standby database
D:\oracle\product\10.2.0\db_1\database>set oracle_sid=bsl01labdg
D:\oracle\product\10.2.0\db_1\database>sqlplus /nolog
SQL*Plus: Release 10.2.0.1.0 - Production on Wed Jul 26 03:11:04 2006
Copyright (c) 1982, 2005, Oracle.  All rights reserved.
SQL> connect sys/dow as sysdba
Connected to an idle instance.
SQL> create spfile from pfile='d:\pfilebsl01labdg.ora';
File created.
--Verify the new spfile
SQL> show parameter spfile
NAME                                 TYPE        VALUE
spfile                               string      D:\ORACLE\PRODUCT\10.2.0\DB_1\DATABASE\SPFILEBSL01LABDG.ORA
11.     Mount the standby DB
SQL> startup mount
ORACLE instance started.
Total System Global Area  167772160 bytes
Fixed Size                  1247900 bytes
Variable Size              62915940 bytes
Database Buffers          100663296 bytes
Redo Buffers                2945024 bytes
Database mounted.
12.     Start Redo Apply
SQL> alter database recover managed standby database disconnect from session;
Database altered.
13.     Verify the status of primary and standby database
--bsl01lab window
D:\oracle\product\10.2.0\db_1\database>set oracle_sid=bsl01lab
D:\oracle\product\10.2.0\db_1\database>sqlplus /nolog
SQL*Plus: Release 10.2.0.1.0 - Production on Wed Jul 26 03:24:41 2006
Copyright (c) 1982, 2005, Oracle.  All rights reserved.
SQL> connect / as sysdba
Connected.
SQL> select instance_name, status from v$instance;
INSTANCE_NAME    STATUS
bsl01lab         OPEN
--bsl01labdg window
D:\oracle\product\10.2.0\db_1\database>set oracle_sid=bsl01labdg
D:\oracle\product\10.2.0\db_1\database>sqlplus /nolog
SQL*Plus: Release 10.2.0.1.0 - Production on Wed Jul 26 03:34:15 2006
Copyright (c) 1982, 2005, Oracle.  All rights reserved.
SQL> connect / as sysdba
Connected.
SQL> select instance_name,status from v$instance;
INSTANCE_NAME    STATUS
bsl01labdg       MOUNTED
Both instance status are OK
14.     Verify archived log transport and applying service
--bsl01lab window
SQL>  select name,sequence# from v$archived_log order by 2;
NAME                                                SEQUENCE#
D:\ORACLE\PRODUCT\10.2.0\ARCH\1_80_595473116.ARC           80
bsl01labdg                                                 80
D:\ORACLE\PRODUCT\10.2.0\ARCH\1_81_595473116.ARC           81
bsl01labdg                                                 81
D:\ORACLE\PRODUCT\10.2.0\ARCH\1_82_595473116.ARC           82
bsl01labdg                                                 82
--bsl01labdg
SQL>  select name,sequence# from v$archived_log order by 2;
NAME                                                SEQUENCE#
C:\DATA_GUARD\ARCH\1_80_595473116.ARC                      80
C:\DATA_GUARD\ARCH\1_81_595473116.ARC                      81
C:\DATA_GUARD\ARCH\1_82_595473116.ARC                      82
--On the primary DB, switch log file by force
--bsl01lab window
SQL> alter system switch logfile;
System altered.
Elapsed: 00:00:05.21
SQL> /
System altered.
Elapsed: 00:00:01.14
SQL> /
System altered.
Elapsed: 00:00:06.01
--Check the archived log again
--bsl01lab window
SQL> select name,sequence# from v$archived_log order by 2;
NAME                                                SEQUENCE#
D:\ORACLE\PRODUCT\10.2.0\ARCH\1_84_595473116.ARC           84
bsl01labdg                                                 84
D:\ORACLE\PRODUCT\10.2.0\ARCH\1_85_595473116.ARC           85
NAME                                                SEQUENCE#
bsl01labdg                                                 85
--bsl01labdg window
SQL> select name,sequence# from v$archived_log order by 2;
NAME                                                SEQUENCE#
C:\DATA_GUARD\ARCH\1_84_595473116.ARC                      84
C:\DATA_GUARD\ARCH\1_85_595473116.ARC                      85
--To check whether the new archived logs have been applied
--bsl01labdg window
SQL> select sequence#,applied
  2  from v$archived_log
  3  order by sequence#;
SEQUENCE# APP
        80 YES
        81 YES
        82 YES
        83 YES
        84 YES
        85 YES
35 rows selected.
The archived logs are applied successfully on the standby database
Switch-over Testing
1.     Verify it is possible to perform a switchover.
--bsl01lab window
SQL> SELECT SWITCHOVER_STATUS FROM V$DATABASE;
SWITCHOVER_STATUS
SESSIONS ACTIVE
SQL> SHOW PARAMETER JOB_QUEUE_PROCESSES;
NAME                                 TYPE        VALUE
job_queue_processes                  integer     10
SQL> ALTER SYSTEM SET JOB_QUEUE_PROCESSES=0;
System altered.
SQL> SELECT SID, PROCESS, PROGRAM FROM V$SESSION
  2  WHERE TYPE = 'USER'
  3  AND SID <> (SELECT DISTINCT SID FROM V$MYSTAT);
       SID PROCESS  PROGRAM
        86 1404:3172 emagent.exe
        89 1234 OMS
        90 1234OMS
        93 1404:1768 emagent.exe
        95 1234 OMS
        98 1988 ORACLE.EXE (J000)
6 rows selected.
--To stop ‘emagent’ and ‘OMS’, open another window, and in OS run
S:\>set oracle_sid=bsl01lab
S:\>emctl stop agent
Oracle Enterprise Manager 10g Database Control Release 10.2.0.1.0
Copyright (c) 1996, 2005 Oracle Corporation.  All rights reserved.
This will stop the Oracle Enterprise Manager 10g Database Control process. Conti
nue [y/n] :y
The OracleDBConsolebsl01lab service is stopping............
The OracleDBConsolebsl01lab service was stopped successfully.
--Common Processes That Prevent Switchover
Type of Process     Process Description     Corrective Action
CJQ0     Job Queue Scheduler Process     Change the JOB_QUEUE_PROCESSES dynamic parameter to the value 0. The change will take effect immediately without having to restart the instance.
QMN0     Advanced Queue Time Manager     Change the AQ_TM_PROCESSES dynamic parameter to the value 0. The change will take effect immediately without having to restart the instance.
DBSNMP     Oracle Enterprise Manager Management Agent     Issue the emctl stop agent command from the operating system prompt.
SQL> SELECT SID, PROCESS, PROGRAM FROM V$SESSION
  2  WHERE TYPE = 'USER'
  3  AND SID <> (SELECT DISTINCT SID FROM V$MYSTAT);
no rows selected
SQL> SELECT SWITCHOVER_STATUS FROM V$DATABASE;
SWITCHOVER_STATUS
TO STANDBY
Now it is ready to switch to standby
2.     Initiate the switchover on the primary database.
SQL> ALTER DATABASE COMMIT TO SWITCHOVER TO PHYSICAL STANDBY;
Database altered.
Elapsed: 00:02:57.73
3.     Shut down and restart the former primary instance.
SQL> shutdown immediate
ORA-01507: database not mounted
ORACLE instance shut down.
SQL> startup mount
ORACLE instance started.
Total System Global Area  167772160 bytes
Fixed Size                  1247900 bytes
Variable Size              88081764 bytes
Database Buffers           75497472 bytes
Redo Buffers                2945024 bytes
Database mounted.
4.     Verify the switchover status on the standby database
--bsl01labdg window
SQL> SELECT SWITCHOVER_STATUS FROM V$DATABASE;
SWITCHOVER_STATUS
TO PRIMARY
5.     Switch the target physical standby database role to the primary role
--bsl01labdg window
SQL> ALTER DATABASE COMMIT TO SWITCHOVER TO PRIMARY;
Database altered.
6.     Finish the transition of the standby database to the primary role.
--bsl01labdg window
SQL> alter database open;
Database altered.
Elapsed: 00:00:33.56
7.     Verify the status of primary and standby database
--bsl01labdg now is the primary database
SQL> select instance_name,status from v$instance;
INSTANCE_NAME    STATUS
bsl01labdg       OPEN
--bsl01lab now is the standby database
SQL> select instance_name,status from v$instance;
INSTANCE_NAME    STATUS
bsl01lab         MOUNTED
--start archived log applying on bsl01lab
SQL> alter database recover managed standby database disconnect from session;
Database altered.
--bsl01labdg window
SQL> alter system switch logfile;
System altered.
SQL> /
System altered.
SQL> /
System altered.
--bsl01lab window
SQL> select sequence#,applied from v$archived_log order by 1;
SEQUENCE# APP
       90 YES
       91 YES
       92 YES
successfully switched-over!Upto Point 13 it's fine but after that on 14
when i do
SQL> select name,sequence# from v$archived_log;
no rows selectedwhat is the problem...